These are nice and sturdy.  The classic milk crates are square so they fit in my location where they are needed and they stack nicely.  They are also much sturdier than regular file crates so they will last much longer.  You can put anything you want in them, but they do not have the side molded holders for the hanging files.  I don't need these for that function so it doesn't bother me.  I love that they came in a set of 2.  The color is also very bright pink which I wanted.  You can't miss them.